The Moon Review

What does the Moon’s low density suggest about its internal structure?

• The lunar mantle extends to the center of the Moon.

• The Moon’s iron core is smaller relative to Earth’s.

• The Moon’s crust is very thick and poor in iron.

• The lunar interior has not differentiated.

Tags

NGSS.HS-ESS2-3

The primary reason the Moon lacks an atmosphere is because

• the Moon is made up of the wrong kinds of rocks to release atmospheric gases.

• Earth's gravity pulls away any atmosphere the Moon collects.

• the Moon lacks sufficient gravity to retain an atmosphere.

• there is no life on the Moon.

Rilles on the lunar surface were formed by _________.

• the impact of small asteroids

• erosion by solar wind

• the flow of ancient rivers

• ancient volcano chains

• ancient lava flows

The lunar maria are primarily composed of _________.

• basalt

• olivine

• silicon dioxide

• anorthosite

The large dark areas on the Moon that form the face of the 'Man in the Moon' are called what?

• rilles

• craters and rays

• maria

• All of these choices are correct.

The lunar highlands are composed primarily of _________.

• basalt

• anorthosite

• olivine

• silicon dioxide

Long canyons on the lunar surface are called _________.

• rifts

• rilles

• maria

• rays

What are rays?

• long, light streaks of pulverized rock radiating outward from craters

• canyons, caused by lava flows or crustal cracking

• areas with no craters at all

• mountainous regions

Why do the lunar maria have a darker color than the highland regions?

• The maria are younger and experienced fewer impacts to weather the surface.

• The maria are composed of different materials than the highlands.

• The maria have less regolith than the highlands.

• The maria are sitting in the shadows of surrounding mountains.

Heavily cratered, lower-density regions of the lunar surface are called _________.

• highlands

• Tycho

• maria

• regolith

• rilles